Finding the Fourth Proportional to 285,163.20, 427,744.80 and 145,195.20
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Solution
The fourth proportional to 285,163.20, 427,744.80 and 145,195.20 is: 217,792.80
Step by Step Solution
- Step 1: Write the proportion equation
285,163.20 : 427,744.80 = 145,195.20 : x - Step 2: Convert to fraction form
285,163.20/427,744.80 = 145,195.20/x - Step 3: Cross multiply
285,163.20x = 427,744.80 × 145,195.20 - Step 4: Simplify right side
285,163.20x = 62,106,491,784.96 - Step 5: Solve for x
x = 62,106,491,784.96/285,163.20 - Step 6: Final answer
x = 217,792.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.